Squalk (Squirt Chalk):
This is the third installment in a series of experimental methods of communication intended to be a creative alternative to regular picketing and rioting, while utilizing accessible non-destructive materials. For this installment you will need:

1 bottle of powder chalk refill (for a contractor chalk box)
1 bottle of water
1 X-acto or utility knife
1 pair of goggles (only if using to fill balloons is this really necessary)
1 particle mask (for handling mass amounts of the dry material, as it is not good to inhale) Thanks Slambert, for the safety tip.

Simply we will be creating a liquid that can be used for many applications from graffiti to entertaining children, and when it dries it is nothing more than a non-permanent chalk (depending on the color).

Step 1: Finding your materials

This is easy as we only really have one material to worry about locating: the chalk. The chalk powder is a refill for a chalk box that construction workers, contractors and carpenters use to make straight lines over long distances. One thing we need to worry about however since our concern with these tools is non-permenance is that certain colors (the florescents mainly) are almost impossible to clean off. Although I have not tried them with the method I am about to describe there is more of a chance that they may leave a more permanent mark, so just be aware. The chalk can be found at most local hardware stores and any larger chains such as home depot or lowes for about $1.50 - $3.00 or in some instances for around $8 for a 5 pound container. Reference the picture for what it looks like, and besides color choice the brand really should not matter. The bottle you see already comes with a squirt top, which makes it easy to dispense the material.

Nice! May try that someday, but on cardboard or something as a splatter painting.

put this stuff in a home made MOP marker maybe? how well does it paint on? <br>

Nevermind, I tried it. Won't work at all.

Thanks for your instructable! I've been looking for something to fill some DIY mop markers with to use on some pub sign boards, the retail ones are damn expensive!<br><br>How do these stand up against rain? I realise it's just chalk, so maybe I could mix it with something a bit more resistant, a white water based paint maybe?<br><br>Thanks again!

Is it fluid enough (or can you make it fluid enough) to be usable with a fertilizer/herbicide sprayer?
I do a lot of side-walk chalking for my school organization and having a way to stencil a design WITH CHALK would be amazing for saturating campus...

I read a tutorial on www.stencilrevolution.com a while ago about using chalk with stencils as a legal means of graphic communication. I think it involved a washable adhesive spray, powdered chalk and a sponge roller. I'm sure that this "squalk" would make a great replacement for paint (applied with a paint roller) in a stencil project...and I may just use this lovely recipe for some of my own university-improving artwork... : ]

Best way for you to stencil with chalk may be to lay your stencil in place, and use your sprayer to mist a dilute glue (like water-based Elmers glue, white glue...) and then sprinkle on powdered chalk using a sifter or a large salt shaker or jar with holes etc....

I will test it out, but I think it might be too thick, for a sprayer. Again, as Nabil pointed out, you can apply it in a similar method to the wax tag in which you apply a line of mix at the edge of one border of the stencil and then spread it across. See if this works for your application.

What happens if you use red(staining) will it stay there forever.

I made some squalk today, its so awesome. definitely going to use it more and try other colors.

Hey hey! This is great. I was looking into buying cans of spray chalk for some guerrilla advertising, but I'm interested in making some of your mix here.
By the way, I know that with spray chalk, oil based sprays are sometimes considered illegal or inappropriate because they last way longer than water-based sprays. I read about the Bikes against Bush issue, but am not sure if that applies nationwide. Was that a state or county court?
Anyway, this is perfect for my purposes. I was looking for other projects I could use chalk in, but didn't expect anyone else to be posting about how to use chalk in projects!

you know... you can get this pre-made it's called PEPTO BISMO

I should try that out, you're right that stuff is chalky and it sure is hell isn't good for much else.

AND it's already colored! :P

chalk4peace is an internationally recognised street art - chalk is harmless, extremely temporary and a heal;thy outlet/form of self expression - something that is really need especially for the youth these days. <br/><br/>who said it was all supposed to be grey all the time? - we are surrounded by corporate graffiti, most of it gaudy and exists only to manipulate/brainwash us into parting with our hard earned money <br/><br/>most public media is out of the reach of ordinary folk whereas the streets are fully accessible. <br/><br/>the police response was totally unnecessary and counter-productive if there is a true desire for a healthy culture <br/>-- <br/> &quot;There is nothing wrong with our world,<br/>we are just having a weird conversation&quot;<br/>&quot;Reclaim the conversation&quot;<br/>&quot;Our New World Order IS Love<br/><a rel="nofollow" href="http://www.infinitepossibility.org">http://www.infinitepossibility.org</a> <br/><br/>&quot;when the conversation reaches critical mass, it transforms into ACTION&quot;<br/>..... Social Acupuncture<br/><a rel="nofollow" href="http://www.infinitepossibility.org/sa">http://www.infinitepossibility.org/sa</a><br/><br/>The Synergy Project video<br/><a rel="nofollow" href="http://video.google.co.uk/videoplay?docid=-5590384322623930783">http://video.google.co.uk/videoplay?docid=-5590384322623930783</a><br/><br/>&quot;Celebration, Our Journey, Our Destination&quot;<br/><a rel="nofollow" href="http://one.revver.com/watch/161159">http://one.revver.com/watch/161159</a><br/><br/><a rel="nofollow" href="http://www.youtube.com/profile?user=viziondanz">http://www.youtube.com/profile?user=viziondanz</a><br/><a rel="nofollow" href="http://www.myspace.com/viziondanz">http://www.myspace.com/viziondanz</a><br/><a rel="nofollow" href="http://www.myspace.com/chalk4peace">http://www.myspace.com/chalk4peace</a><br/><br/>Dedicated to the child inside each one of us, <br/>All the children and<br/>All the children to come<br/>

Note that the UK police will happily arrest you for doing this on the pavement!
A bunch of kids (and I mean kids, not teens!) got busted and taken to the station, DNA and fingerprints, etc. for drawing with regular chalk on the pavement outside their home. The police tried to justify this by saying some other people had been using "long lasting" chalk.
I'm not sure I like the connection drawn - some other people killed a guy with a garrotte, and you have a jump rope, so we are arresting you for having a jump rope.

I'm 16 and live in Liverpool and I did a voluntary work with some deprived kids on the streets and we drew with chalk and the police were there for are safety and they drew with it two - unless we had a licence to do it.
Cool Idea by the way

Noted, thanks. That sounds a bit harsh, but from what I hear that's the way Ol'Bill rolls. We can and will always find ways to voice our concerns even in a police state.

Anyone know what compound construction chalk is based on? Wondering because I have tons of gym/climbing chalk (Magnesium carbonate, MgCO3) sitting around. Haven't played with it yet but it very well may be the same. MgCO3 is a hydrate, so it potentially could work.... Much cheaper than construction chalk, definitely not permanent and no harmful materials...

That sounds interesting, where do you buy it from?
This is news to me, I always thought that climbers were using a talcum based powder similar to baby powder. Good to know. Try it out and let us know how it goes.
Also what container type does it come in?

Just google "gym chalk" or "climbing chalk." Hell, even google Magnesium Carbonate. Amazon.com carries Endo Block Chalk (block form, obviously, but easy to smash- what I have sitting around), REI.com carries lots- I think they have metolius, endo, and a few others... Endo is the cheapest, Metolius is the best for actual climbing (supposedly- they market "super grip" additives or w/e, some climbers swear by it).
As for containers, you'd have to use something other than factory- Endo comes as blocks wrapped in wax paper or plastic, basically, and the powdered varieties come in either balls (fine mesh with chalk inside) or platic bags.

I've seen a recipe for sidewalk chalk that used plaster of paris and tempora paint. Could you use plaster of paris instead of chalk powder?

I suppose you could, however: it would be a much more permanent solution. It works well as a setup for sidewalk chalk because it is meant to setup as a firm plaster, but as a liquid delivery it might be more than you want, or exactly what you want, who knows.

This looks like fun but unfortunately it drips to much could it work in a glass marker or squeezer?

Sorry, I should post a video, or at least some comparison photos. The drips were intended. If you were to mix this to the two thicker mixtures (writing and drawing) you have a surprising amount of control.
The front picture on the chalk board could have been just a line straight across, but instead is a nod to KR and old school graffiti writers. If you want less drips, play with the consistency and the amount of pressure you put on the bottle during application, and move a little quicker.
Sorry again, my fault. I will try to get some videos up soon.

Notonly yours I also saw some other images wich also dripped but still with a squeezer if it doesn't block to much chalk it could make bigger lines

Anyone care to try blending some regular chalk with some water? That's bound to be easier to find than powdered construction chalk...
PS: may want to try this with an old blender, since blending chalk is bound to dull the blade fairly rapidly.

I was thinking cheese grater.

This looks like fun! My first thought was "alcohol & chalk - brilliant!"... anyone tried with quick-dry alcohol as the fluid?

I did. That was my first thought as well, so I tried it with an isopropyl mix, but when it dried it was not as well packed as the water mixture. It didn't seem to bond well with any surface and would fall off within the hour. Maybe there is a different type of alcohol that would make for a better mixture and still have a faster dry time though, I didn't do extensive testing, just water, isopropyl alcohol, and baby oil.

If you want to thin it and make spray chalk-&quot;spralk&quot;? Then you might try a lung-powered atomizer. You can attach a length of rubber tubing to the blowpipe for more maneuverability. They can be ordered through most art supply stores-here's a link to one:<br/><a rel="nofollow" href="http://www.dickblick.com/zz034/00/">http://www.dickblick.com/zz034/00/</a><br/>

That's pretty slick! Do you have one of these, so you can try it out?

you may also want a particle mask. Some of the colored construction grade chalks have some potentially harmful materials if inhaled.

Somehow I knew you'd have a comment about this one, its like krink, but for school

Hahaha you're right, I have to say I am proud to be grouped with krink.

That is a good point, in its dry powdered state it would not be the best stuff to inhale. I will add that as a possible precaution. Thanks Slambert.

Be careful what kind of chalk you buy if you want the squalk to be erasable -- most powdered construction chalk is designed to mark permanently. I think the blue chalk is usually temporary, but read the label.

I wonder if you could use a paint roller with this stuff

It should work like a thick plaster. Buy in bulk! look for those 5lbs bottles at home depot or a large mess of sidewalk chalk on sale.

Squalk - I love it! I'm gonna try it with a sponge applicator for the small stencils I'm cutting 2nite for a little foray tomorrow.
I do LOVE the drip effect though.
Thanks for posting this.
Patrik, sidewalk chalk through a wire sieve works great.

Sounds like fun. Let us know how it goes, and thanks for the sidewalk chalk tip.

more Kassel squalk...

Thanks for the pic camb416.

If you used it on a brick/textured wall it may not actually come off without sandblasting... back in catholic school we used to have the job of "banging out the erasers" and the nuns hated when we used the building to do that... leaving chalk eraser smack-marks on the brick... and no amount of washing got rid of it.

I think since it is mixed with water it doesn't allow the powder to soak in too much. I have broken it off pretty cleanly before.

Here is SQUALK in Kassel, Deutschland at the Kunsthochshule June 2007...

i know this writer...

Thanks for posting the pic Spranger. The only supplies we could find in Germany were all dark colored and carried no labels in english or sometimes none at all. It was a little finer particle too so it was a little more difficult to get the mixture right but still fun.

wicked cool. of course, once something gets tagged, the more likely it is for others to tag it...

what was the purpose behind tagging jihad on the truck -- just out of the curious